html body{
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
}
body{
  background: red;
}
#d1{
    width: 600px;
    height: 600px;
    background-image: url(../html/bj.png);
    background-size:  100% 100%;
    margin: 0 auto;
}
#d2{
  width: 300px;
  height: 300px;
  background-image: url(../html/1.png);
  background-size: 100% 100%;
  position: absolute;
  top: 170px;
  left: 530px;
  cursor: pointer;
}